CN202114315U - Forming flat drill - Google Patents
Forming flat drill Download PDFInfo
- Publication number
- CN202114315U CN202114315U CN2011202160261U CN201120216026U CN202114315U CN 202114315 U CN202114315 U CN 202114315U CN 2011202160261 U CN2011202160261 U CN 2011202160261U CN 201120216026 U CN201120216026 U CN 201120216026U CN 202114315 U CN202114315 U CN 202114315U
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- China
- Prior art keywords
- bit
- forming
- stage
- drill
- blade tip
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Processing Of Stones Or Stones Resemblance Materials (AREA)
Abstract
The utility model relates to a forming flat drill, which is characterized in that the forming flat drill is an integral forming structure and comprises a cylindrical handle (1). The front end of the handle is connected with a flat bit, a transitional arc (2) is arranged at a connection position of the handle and the bit, the bit is a two-stage type structure, the width of a first-stage bit (3) at the front end of the bit is smaller than that of a second-stage bit (4) at the rear of the first-stage bit (3), a blade tip (5) is disposed at the top end of the first-stage bit, a blade tip angle of the blade tip (5) is 90 degrees, the first-stage bit and the second-stage bit are in chamfering transition, cutting edges (6) are arranged at edges of the blade tip and the first-stage bit, and a chamfering blade (7) is disposed at a transition position of the first-stage bit and the second-stage bit. The forming flat drill can form forming holes with bottom cones and hole chamfers at one step, work efficiency is greatly improved, and simultaneously, as the forming holes are in one-step forming, concentricity and integral precision of portions of each forming hole are greatly increased. In addition, the space of a chip removal groove of the flat bit of the forming flat drill is large, an edge of the forming flat drill is sharp, and surface smoothness of the processed holes is improved.
Description
Technical field
The utility model relates to a kind of aperture knife tool, particularly a kind of chit drill.
Background technology
In the prior art, when processing has the moulding hole of labyrinth, generally need use many, like the moulding hole of processing belt bottom surface awl and aperture chamfering cutter; Generally need to use Twist Drill earlier, re-use the tack milling cutter bottom surface, hole is scabbled, use conical milling cutter to process the base cone that portals then; Use rose reamer processing aperture chamfering at last, so, processing a moulding hole needs four cutter; Waste time and energy, and, need tool setting again behind the replacing cutter; Certainly exist error in the tool setting process, to such an extent as to the each several part coaxiality deviation is big, moulding hole precision is lower.
The utility model content
In order to overcome above-mentioned defective, the purpose of the utility model is to provide a kind of moulding chit drill, but the moulding hole of one-shot forming band bottom surface awl and aperture chamfering.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of moulding chit drill, its structure that is formed in one comprises a columniform shank; Said shank forward end is connected with a flat drill bit, and said shank and drill bit junction are provided with transition arc, and said drill bit is a secondary formula structure; Wherein, the one-level drill bit width that is arranged at front end is less than the secondary drill bit that is arranged at thereafter, and said one-level drill end is provided with an apex point; The blade tip angle of said apex point is 90 °; Through the chamfering transition, blade tip and one-level drill margin place are provided with cutting edge between the I and II drill bit, and I and II drill bit transition Chamfer Edge place is provided with chamfering blades.
The beneficial effect of the utility model is: but the moulding hole of one-shot forming band bottom surface awl and aperture chamfering, operating efficiency promotes greatly, and simultaneously, because the moulding hole is one-shot forming, each several part axiality and overall precision also promote greatly; In addition, this moulding chit drill adopts flat drill bit, and its chip area space is big, and cutting edge is sharp, has improved the surface flatness of machining hole.
Description of drawings
Fig. 1 is the structure chart of the utility model moulding chit drill.
The specific embodiment
As shown in Figure 1:
The moulding chit drill of present embodiment, the structure that is formed in one comprises a columniform shank 1; Said shank forward end is connected with a flat drill bit, and said shank and drill bit junction are provided with transition arc 2, and said drill bit is a secondary formula structure; Wherein, one-level drill bit 3 width that are arranged at front end are less than the secondary drill bit 4 that is arranged at thereafter, and said one-level drill end is provided with a blade tip 5; The blade tip angle of said blade tip 5 is 90 °; Through the chamfering transition, blade tip and one-level drill margin are provided with cutting edge 6 between the I and II drill bit, and I and II drill bit transition position is provided with chamfering blades 7.But the moulding hole of this moulding chit drill one-shot forming band bottom surface awl and aperture chamfering, operating efficiency promotes greatly, and simultaneously, because the moulding hole is one-shot forming, each several part axiality and overall precision also promote greatly; In addition, this moulding chit drill adopts flat drill bit, and its chip area space is big, and cutting edge is sharp, has improved the surface flatness of machining hole.
Claims (1)
1. a moulding chit drill is characterized in that, its structure that is formed in one; Comprise a columniform shank (1), said shank forward end is connected with a flat drill bit, and said shank and drill bit junction are provided with transition arc (2); Said drill bit is a secondary formula structure, and wherein, one-level drill bit (3) width that is arranged at front end is less than the secondary drill bit (4) that is arranged at thereafter; Said one-level drill end is provided with a blade tip (5), and the blade tip angle of said blade tip (5) is 90 °, passes through the chamfering transition between the I and II drill bit; Blade tip and one-level drill margin are provided with cutting edge (6), and I and II drill bit transition position is provided with chamfering blades (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202160261U CN202114315U (en) | 2011-06-24 | 2011-06-24 | Forming flat drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202160261U CN202114315U (en) | 2011-06-24 | 2011-06-24 | Forming flat drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202114315U true CN202114315U (en) | 2012-01-18 |
Family
ID=45455413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202160261U Expired - Fee Related CN202114315U (en) | 2011-06-24 | 2011-06-24 | Forming flat drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202114315U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103273122A (en) * | 2013-06-14 | 2013-09-04 | 昆山昊凯金属制品有限公司 | Chambering drill bit |
-
2011
- 2011-06-24 CN CN2011202160261U patent/CN202114315U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103273122A (en) * | 2013-06-14 | 2013-09-04 | 昆山昊凯金属制品有限公司 | Chambering drill bit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20120624 |